CVE•Published 2026-05-13•Modified 2026-06-18•0 articles on news•4 live references•NVD data
CVE-2026-42926F5 · Nginx_gateway_fabric
Vulnerability data via NVD (ingested)
CVSS v3.1
5.8
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS percentile
24
Exploit Prediction Scoring System · top 76% of all CVEs
Weaknesses (CWE)
Description
When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxy_http_version to 2, and also uses proxy_set_body, an attacker may be able to inject frame headers and payload bytes to the upstream peer. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Timeline
Published 2026-05-13
Modified 2026-06-18
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-42926Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"F5 Nginx Gateway Fabric"All exposed F5 Nginx Gateway Fabric instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Nginx Gateway Fabric"HTTP body or banner mentions "Nginx Gateway Fabric" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-42926Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-42926Censys host search filtered to this CVE id.
grep.app
CVE-2026-42926Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-42926GitHub code search for direct mentions.
Google dork
"CVE-2026-42926" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (4)
CVE-2026-429264 repos
We haven't classified any articles referencing CVE-2026-42926 yet. The external references above still apply.